El hombre primitivo en América /

by Krieger, Alex Dony 1911-, Krieger, Alex Dony 1911-
Published 1974

The archaeology of Humboldt Cave, Churchill County, Nevada /

by Heizer, Robert Flemming 1915-1979
Published 1956

Prehistoric man in the new world /

by Armillas, Pedro, Heizer, Robert Flemming 1915-1979
Published 1964